Question

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We have q1,q2 and q3 with loads of 8uC, 10uC, and -13uC, respectively , available as shown in attached picture . Find the magnitud and the direction of the final force of q1 and q2 over q3

Answer 1

$F_3=k\frac{q_1q_3}{r_{13}^2}+k\frac{q_2q_3}{r_{23}^2}$